No kidding.
Who actually governs the state of Yemen has been in dispute for years now.
What isn't in dispute?
A bipartisan United States House and Senate earlier this year invoked the War Powers Act to stop US military involvement in the Yemen conflict. https://www.vox.com/2019/4/4/18293954/war-powers-resolution-passes-congress-yemen-bds
If not for Donald Trump vetoing the resolution the United States wouldn't even be involved in creating a humanitarian crisis where 10 million Yemen civilians are on the verge of starvation.
Guess what? If Trump wasn't backing Saudi's play in Yemen, none of what happened today happens.
The US was developing a useful counterbalance to Saudi Arabia by working out a nuclear agreement with Iran and our European allies.
Trump by unilaterally withdrawing from the agreement (without justification) has found a way to make an already chaotic and dangerous region even more chaotic and dangerous.
What a fuging great negotiator.

This is the very same sort of attitude that got the US to illegally invade Iraq resulting in the deaths of hundreds of thousands of innocent civilians.
You do know what has been going on in Yemen for the last several years?
https://news.un.org/en/story/2019/03/103
Saudi Arabia with the help of the United States has created the largest famine in modern history, maybe ever. If the rebels that Saudi Arabia is trying to destroy in Yemen retaliated, who is really surprised?
Using your standards we might as well blame the US for the Apartheid killings in the Palestinian territories of Israel, the thousands of Iranian soldiers killed by chemical weapons during the Iran-Iraq war and the millions of people currently starving to death in Yemen.
I'm not opposed to doing that, but we need to be consistent as the "leader of the free world" rather than just cherry picking.

Confidence will take more than wins, though a few of those wouldn't hurt.
The Panthers weren't firing on all cylinders during the first half of last season, but they were racking up the wins.
It was fun to watch while it lasted, but it felt like one of those situations where you're waiting for the other shoe to drop.
Then Pittsburgh happened and this team has been in a tailspin ever since.
Last time this team instilled confidence was 2015, damn near half a decade ago.

And your title of this thread is based on what sources?
Here is what I've found:
Based on this comment there is little/no evidence Iran is behind these attacks any more than they were responsible for the tanker attacks that much of the world including our European allies largely dismissed a few months ago.
Pompeo and the current US government have little to zero credibility on the world stage. They are a bunch of warmongering opportunists, just like GWB and Dick Cheney who lied us into two disastrous wars.

Biden at best represents the status quo, or in Biden's own words to his big money donors "Nothing would fundamentally change". The longer this nomination process continues, the more Joe Biden looks like a poor selection to confront Trump.
Biden's political record is horrible and if the MSM wasn't propping him up on almost a daily basis the American public would already be moving on from him. Just like during his previous failed campaigns for the democratic nomination in 88 and 08 when he lost to Michael Dukakis of all people.
I truly believe most Americans have forgotten how horrible Biden is or they are too young to remember. Joe Biden isn't the "most electable" he may even be one of the least electable still in the race.
Reality is, Biden is more conservative than Obama, Hillary and possibly Bill. Those are the very people whose half measures/incremental changes/lip service to voters and pay-to-play politics helped set the stage for the faux populist Trump.
I'm seriously concerned if the democratic voters settle for Biden and by some miracle he wins, Joe will only create a political environment in which another Trump like pol gets swept into office in 2024. However, unlike Trump chances are it will be someone that is much more capable of creating a world we may never be able to recover from as a democracy.
This election may be our best last hope of electing someone that isn't beholden to big money and corporate interests. I won't presume to speak for others, but Sanders is unlike any pol in my lifetime (who realistically has a chance of winning) when it comes to representing the interests of working class Americans, minorities and the poor.

Adam Johnson must have been reading the comments here in the Tinderbox. Bunch of republicans and establishment dems talking up "Sundowner" Joe Biden as our only hope/"most electable":
Who gives a poo what these republicans and corporate/establishment dems think? They need to come out of the closet and declare they are totally OK with what Trump is doing other than they really wish he would behave more "Presidential" like GWB or Ronald Reagan while doing it.